Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17521#discussion_r109486383
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/CatalystConf.scala ---
@@ -0,0 +1,413 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.catalyst
+
+import java.util.{NoSuchElementException, Properties, TimeZone}
+
+import scala.collection.JavaConverters._
+
+import org.apache.hadoop.fs.Path
+
+import org.apache.spark.internal.Logging
+import org.apache.spark.internal.config.{ConfigEntry, ConfigReader,
OptionalConfigEntry}
+import org.apache.spark.sql.catalyst.analysis.Resolver
+import org.apache.spark.util.Utils
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// This file defines the configuration options for Catalyst
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+
+object CatalystConf {
+ import ConfEntries.{buildConf, buildStaticConf}
+
+ val OPTIMIZER_MAX_ITERATIONS =
buildConf("spark.sql.optimizer.maxIterations")
+ .internal()
+ .doc("The max number of iterations the optimizer and analyzer runs.")
+ .intConf
+ .createWithDefault(100)
+
+ val OPTIMIZER_INSET_CONVERSION_THRESHOLD =
+ buildConf("spark.sql.optimizer.inSetConversionThreshold")
+ .internal()
+ .doc("The threshold of set size for InSet conversion.")
+ .intConf
+ .createWithDefault(10)
+
+ val MAX_CASES_BRANCHES = buildConf("spark.sql.codegen.maxCaseBranches")
+ .internal()
+ .doc("The maximum number of switches supported with codegen.")
+ .intConf
+ .createWithDefault(20)
+
+ val ORDER_BY_ORDINAL = buildConf("spark.sql.orderByOrdinal")
+ .doc("When true, the ordinal numbers are treated as the position in
the select list. " +
+ "When false, the ordinal numbers in order/sort by clause are
ignored.")
+ .booleanConf
+ .createWithDefault(true)
+
+ val GROUP_BY_ORDINAL = buildConf("spark.sql.groupByOrdinal")
+ .doc("When true, the ordinal numbers in group by clauses are treated
as the position " +
+ "in the select list. When false, the ordinal numbers are ignored.")
+ .booleanConf
+ .createWithDefault(true)
+
+ val CASE_SENSITIVE = buildConf("spark.sql.caseSensitive")
+ .internal()
+ .doc("Whether the query analyzer should be case sensitive or not. " +
+ "Default to case insensitive. It is highly discouraged to turn on
case sensitive mode.")
+ .booleanConf
+ .createWithDefault(false)
+
+ val RUN_SQL_ON_FILES = buildConf("spark.sql.runSQLOnFiles")
+ .internal()
+ .doc("When true, we could use `datasource`.`path` as table in SQL
query.")
+ .booleanConf
+ .createWithDefault(true)
+
+ // Use lazy val here, as the default timezone may change after
`CatalystConf` is instantiated.
+ // TODO: we may need a `ConfigEntryWithDefaultFunction` so that the
default value of session
+ // location timezone is always the default timezone at the time we call
`getConf`.
+ lazy val SESSION_LOCAL_TIMEZONE =
--- End diff --
cc @ueshin
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